Protective cap for a drug infusion device



FIG. 1 is a perspective view of the top, front and left side of a protective cap for a drug infusion device showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom elevational view thereof;

FIG. 4 is a top elevational view thereof; and,

FIG. 5 is a left elevational view thereof.

The rear elevation is identical to the front elevation.

The right elevation is identical to the left elevation. 

The ornamental design for a protective cap for a drug infusion device, as shown and described. 